Penn State Extension

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Tree of heaven leaves. Credit: Bigstock
Tree-of-Heaven - Articles Articles

Tree-of-Heaven

David R. Jackson, Art Gover

Tree-of-heaven (Ailanthus altissima) also known as ailanthus, is a rapidly growing deciduous tree native to a region extending from China south to Australia. Spotted Lanternfly, an invasive pest, is particularly attracted to Tree-of-heaven. More
Mulching Landscape Trees
Mulching Landscape Trees - Articles Articles

Mulching Landscape Trees

David R. Jackson

Mulches are materials placed over the soil surface to enhance landscape beauty, improve soil conditions, protect plants from foot traffic and lawn equipment, and suppress weeds. More
Identifying Tree-of-Heaven and Some Native Look-a-Likes
Identifying Tree-of-Heaven and Some Native Look-a-Likes - Videos Videos
Tree-of-heaven a preferred host of the invasive insect, the spotted lanternfly (SLF.) The tree is used to help monitor for SLF and also as a “trap” trees to help control SLF populations. More
Spotted Lanternfly IPM Management Calendar
Spotted Lanternfly IPM Management Calendar - Articles Articles

Spotted Lanternfly IPM Management Calendar

Emelie Swackhamer, David R. Jackson, Art Gover

There are various management techniques to consider to destroy or control the Spotted Lanternfly. Learn the recommended methods to use during certain times of the year. More
Forestry with Confidence: A Guide for Woodland Owners
Forestry with Confidence: A Guide for Woodland Owners - Articles Articles

Forestry with Confidence: A Guide for Woodland Owners

David R. Jackson, Sanford S. Smith, Ph.D., Allyson Brownlee Muth, Ed.D.

This full color publication will assist woodland owners in examining their woodlands. More
Woodland Stewardship: Management Practices for Landowners
Woodland Stewardship: Management Practices for Landowners - Online Courses Online Courses
$119.00
Learn about forest ecosystems, management, and stewardship practices, as well as wildlife, water, tree identification and measurement, and legacy planning. More
Teach for Forests: Forest Education for Teachers and Youth Leaders
Teach for Forests: Forest Education for Teachers and Youth Leaders - Online Courses Online Courses
$119.00
Learn about trees, wildlife, water, and ecology. Learn to teach children and teens with activities and through curriculum recommendations. Earn Act 48 credits. More
Understanding Forests: Education for the General Public
Understanding Forests: Education for the General Public - Online Courses Online Courses
$79.00
Learn practical knowledge and skills about forest trees, wildlife, and water, as well as forest ecology, management, and silviculture. More
Photo by Mike Eckley
Backpack Sprayer Calibration for Woodland Applications - Articles Articles

Backpack Sprayer Calibration for Woodland Applications

David R. Jackson, Kimberly Bohn, Ph.D., Art Gover

This article covers calibrating a backpack sprayer to determine how much herbicide to add for band applications and spot treatments. More
Herbicide treatments are often used to reduce competition between undesirable vegetation and planted or naturally established tree seedlings.
Chemical Control of Forest Vegetation - Articles Articles
This article details control methods involving pesticides and herbicides by application method. More
Fern-dominated forest understories interfere with forest regeneration and provide poor habitat for wildlife. Photo Credit: David Jackson
Controlling Understory Fern Competition for Regeneration Success - Articles Articles
Dense understories of hay-scented, New York, and bracken fern can interfere with the regeneration of hardwood forests, threatening their sustainability. More
Photo credit: Todd Hagenbuch
Using Basal Bark Herbicide Applications to Control Understory Tree Species - Articles Articles
When considering basal bark treatments for timber stand improvement and/or forest regeneration establishment projects, it is important to know what species are targeted for treatment. More
Regenerating Hardwood Forests: Managing Competing Plants, Deer, and Light
Regenerating Hardwood Forests: Managing Competing Plants, Deer, and Light - Articles Articles
Competing plants, deer, and insufficient light on the forest floor can interfere with regeneration. This article addresses how to manage these issues. More
Planting trees can speed up the natural succession from field to forest
Forest Landowners Guide to Tree Planting Success - Articles Articles
This article focuses on the values and methods of establishing wooded areas on rural property. More
Japanese Barberry
Japanese Barberry - Articles Articles

Japanese Barberry

David R. Jackson

Japanese barberry (Berberis thunbergii) was introduced from Japan around 1875. It now ranges from Nova Scotia south to North Carolina, and westward to Montana. More
Japanese and Giant Knotweed
Japanese and Giant Knotweed - Articles Articles

Japanese and Giant Knotweed

David R. Jackson

Japanese knotweed (Polygonium cuspidatum) and Giant knotweed (Polygonum sachalinensis) are two invasive, exotic weeds found throughout much of the United States and Canada. More
Emerald Ash Borer
Emerald Ash Borer - Articles Articles

Emerald Ash Borer

David R. Jackson

Emerald Ash Borer (EAB) is a destructive, introduced insect of North American ash trees. It has been the cause of widespread ash tree decline and mortality throughout northeastern North America. More
Autumn Olive
Autumn Olive - Articles Articles

Autumn Olive

David R. Jackson

Autumn olive (Elaeagnus umbellata) is an exotic deciduous shrub and has been listed as a noxious weed throughout much of its range. More
Forest Vegetation Management
Forest Vegetation Management - Articles Articles

Forest Vegetation Management

David R. Jackson

As a forest landowner or manager, there is a need for increased understanding of the impacts created by competing and invasive vegetation in our woodlots. More
Herbicide Summary - Garlon 3A Herbicide Summary - Garlon 3A - Articles

Herbicide Summary - Garlon 3A

David R. Jackson

Controls woody plants, broadleaf weeds, and vines; broadcast treatments for site preparation and release of spruce, fir, red pine, and white pine. More
Herbicide Summary - Escort XP Herbicide Summary - Escort XP - Articles

Herbicide Summary - Escort XP

David R. Jackson

Controls many annual and perennial broadleaf weeds and woody plants, especially effective on kudzu vine and multiflora rose; used in conifer site preparation. More
Herbicide Summary - Velossa Herbicide Summary - Velossa - Articles

Herbicide Summary - Velossa

David R. Jackson

Used to control most annual, biennial, and perennial weeds and woody vegetation for conifer site preparation and release and in the establishment of yellow poplar plantations. More
Herbicide Summary - VelparL Herbicide Summary - VelparL - Articles

Herbicide Summary - VelparL

David R. Jackson

Used to control most annual, biennial, and perennial weeds and woody vegetation for conifer site preparation and in the establishment of yellow poplar plantations. More
Herbicide Summary - Trooper 101 Mixture Herbicide Summary - Trooper 101 Mixture - Articles
Used for control of most annual and perennial broadleaf weeds, woody plants, and vines on forest planting sites. More
Herbicide Summary - Rodeo Herbicide Summary - Rodeo - Articles

Herbicide Summary - Rodeo

David R. Jackson

Controls annual and perennial weeds, grasses, vines, and woody plants; broadcast and spot treatments for hardwood brush and fern control; directed spray and broadcast treatments for conifer release. More
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